Directory · Wyoming · Ocean marine

Who writes ocean marine in Wyoming

Top insurer groups from the NAIC market share report; the state's list carries no lines of authority.

American International Group wrote the most ocean marine in Wyoming in 2025, $14.9M and 89.5% of the state's premium; the top five groups hold 94%. Wyoming's company list doesn't say which lines each company is licensed for, so the ranking below is the NAIC's top 10 groups; every licensed company is on the Wyoming page.

By Sam Alishahi, independent insurance broker · All lines in Wyoming

Top 10 · NAIC table: 08 - Ocean Marine

The insurer groups that write the most ocean marine in Wyoming

Top 10 insurer groups by direct premium written in 2025, from the NAIC's Market Share Reports for Property/Casualty Groups and Companies by State. A group is the parent and its insurance companies together; share is the group's part of the state total for the line; loss ratio is losses incurred over premium earned.

#	Insurer group	Premium written	Share	Loss ratio	Member companies here
1	American International Group	$14.9M	89.51%	14%	National Union Fire Insurance Company of Pittsburgh, Pennsylvania, AIG Property Casualty Company, Lexington Insurance Company, AIU Insurance Company
2	Farmers Insurance Group	$277,000	1.66%	71%	Farmers Insurance Exchange, Foremost Insurance Company Grand Rapids, Michigan, Mid-Century Insurance Company, Fire Insurance Exchange Fire Underwriters Association
3	Accelerant Holdings Group	$164,000	0.98%	309%	Accelerant National Insurance Company, Accelerant Specialty Insurance Company
4	Travelers Group	$146,000	0.88%	—	Travelers Property Casualty Company of America, Standard Fire Insurance Company (The), Travelers Personal Insurance Company, Travelers Casualty and Surety Company of America
5	Nationwide Corporation Group	$140,000	0.84%	32%	Nationwide Mutual Insurance Company, Nationwide Insurance Company of America, National Casualty Company, Nationwide General Insurance Company
6	Axis Capital Group	$137,000	0.82%	23%	AXIS Insurance Company, AXIS Surplus Insurance Company, AXIS Reinsurance Company, AXIS Specialty Insurance Company
7	Swiss Re Group	$109,000	0.65%	70%	Swiss Re Corporate Solutions Elite Insurance Corporation, Swiss Re Corporate Solutions America Insurance Corporation, Swiss Re Corporate Solutions Capacity Insurance Corporation, Swiss Re Corporate Solutuions Premier Insurance Corporation
8	Markel Group	$96,000	0.57%	15%	State National Insurance Company, Inc., Markel Insurance Company, Markel American Insurance Company, Essentia Insurance Company
9	Ascot Insurance Us Group	$79,000	0.47%	162%	Ascot Insurance Company, Ascot Specialty Insurance Company, ASCOT SURETY \u0026 CASUALTY COMPANY, AmFed Causualty Insurance Company
10	American Financial Group	$77,000	0.46%	—	Great American Insurance Company, Great American Assurance Company, National Interstate Insurance Company, Great American Alliance Insurance Company

Turned down?

Last resort for ocean marine in Wyoming

Last resort	Lines	Where	How to get in
Surplus lines and Lloyd's open market	all	all states, under each state's diligent-search rules	Through surplus lines wholesalers; commercial property and liability have no guaranteed plan, so this is their last step	Source

Method and source

Source: the Wyoming insurance regulator company list, read 2026-10-18 and the surplus lines list. Admitted = Wyoming DOI '2025 Property & Casualty AdHoc Com Data Statement Report - run date 06/11/2026' (Google Sheet linked from https://doi.wyo.gov/companies under Company Financial Information > 2025 Financial Summary Information > Property & Casualty*). It lists every company filing a P&C annual statement in Wyoming with its NAIC code and Wyoming direct premium; it is an NAIC ad hoc financial report, not a DOI-labelled 'licensed companies' list, so completeness as a licence roster is inferred (764 companies, 493 with WY premium > 0). P&C only (life, health and title have separate sheets); 'type' is set from the report title, not per row. No domicile, lines of authority or licence dates are given. Surplus lines: Wyoming publishes no eligibility list (https://doi.wyo.gov/companies/surplus-lines); U.S. nonadmitted insurers qualify under NRRA (authorized in domicile, >= $15M capital & surplus), alien insurers must be on the NAIC Quarterly Listing of Alien Insurers (Edition 252, July 1, 2026), read from the SLIP+ mirror because content.naic.org is behind a Cloudflare challenge. Rows carry the NAIC AIIN (e.g. AA-1344102) in 'aiin' with naic left '' (not a 5-digit cocode); 'country' holds the domicile country, 'domicile' is '' (not a U.S. state); 88 alien companies + 104 Lloyd's syndicates; 'eligible' is '' because the listing gives no admission dates; 'footnote' marks NAIC footnotes (3 = RiverStone, run-off, not eligible anywhere; 1 = Chubb Seguros Mexico, ineligible in TX; 4 = Cigna Global, travel medical only). "Premium" is direct premium written in the state for the year shown; "share" is that company's part of the state total for the line. A company can be licensed for a line and write none of it, and a surplus lines insurer can write a line without a state license for it.

Open to use. Cite "Alishahi Insurance insurance company directory" and link here. CSV · JSON.

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